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Finding the Fourth Proportional to 202,309.55, 303,421.80 and 102,375.80

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Solution

The fourth proportional to 202,309.55, 303,421.80 and 102,375.80 is: 153,542.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,309.55 : 303,421.80 = 102,375.80 : x
  2. Step 2: Convert to fraction form
    202,309.55/303,421.80 = 102,375.80/x
  3. Step 3: Cross multiply
    202,309.55x = 303,421.80 × 102,375.80
  4. Step 4: Simplify right side
    202,309.55x = 31,063,049,512.44
  5. Step 5: Solve for x
    x = 31,063,049,512.44/202,309.55
  6. Step 6: Final answer
    x = 153,542.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.